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Neptune is an average distance of 4.50 x 109 kilometer from the Sun. Find the length of the Neptunian year given that the Earth is 1.50 x 108 kilometer from the Sun on the average.
yr
A 253 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal.
A railroad car of mass 2.54 104 kg, is moving with a speed of 3.91 m/s. It collides and couples with three other coupled railroad cars, What is the speed of the four cars after the collision
a plane has an airspeed of 142 ms. a 16.0 ms wind is blowing southward at the same time as the plane is flying. if the
At a waterpark, sleds with riders are sent along a slippery,horizontal surface by release of a large, compressed spring.The spring with a force constant k= 3700 N/m and negligible mass rests on the frictionless horizontal surface.
The left end of a long glass rod 15.0 cm in diameter has a convex hemispherical surface 7.50 cm in radius, Determine the position of the image if an object is placed in air on the axis of the rod
Using cylinders 3 cm in diameter and 0.50 m long, students constructed a musical instrument by placing liquid in the cylinders. The temperature was about -10 degrees celcius and they can use the formula for the speed of sound in air:
A thin, 70.0g disk with a diameter of 7.50cm rotates about an axis through its center with 0.270J of kinetic energy
An instructor wants to use a lens to project a real image of a light bulb onto a screen 2.27 m from the bulb. what focal length lens will be needed
A log is floating on swiftly moving water. A stone is dropped from rest from a 72.0-m-high bridge and lands on the log as it passes under the bridge. what is the horizontal distance between the log and the bridge
a 35 horizontal metal bar 14 long is free to slide up and down between two tall vertical metal rods that are 14 apart.
A single roller-coaster car is moving with speedv0 on the first section of track when it descends a 5.1 meter deep valley, Find what is the minimum speed v0 required if the car is to travel beyond the top of the hill
The intensity of the light that reaches Earth from the star is 3.94 x 10-21 W/m2. At what rate does the star radiate EM energy
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